{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2937ESX-2.5/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM2937ESX-2.5-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM2937ESX-2.5-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM2937ESX-2.5%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM2937ESX-2.5/NOPB, positive fixed LDO regulator, 2.5V output, 500mA, 26V max input, DDPAK/TO-263-3, -40°C to 125°C.","salesMarkdown":"## 2.5V fixed rail for harsh environments The Texas Instruments LM2937ESX-2.5/NOPB is a positive fixed LDO regulator delivering a 2.5V output at up to 500mA, with a maximum input voltage of 26V. The DDPAK/TO-263-3 surface-mount package (the same footprint as D²Pak) gives good thermal transfer through the tab to the board copper, which matters when you're pulling near the 500mA limit at high ambient. ## Protection and dropout — what the ratings mean On-chip protection covers over-temperature, reverse polarity, and short circuit — three failure modes that kill unguarded regulators in field returns. The reverse polarity protection is especially useful in battery-powered or vehicle applications where the input can get swapped. Maximum dropout is 1V at 50mA load, so with a 3.5V input rail you still hold regulation at light loads. At full 500mA output, expect dropout to rise — the datasheet curve shows it, but the 1V figure at 50mA gives you the low-load margin. Quiescent current is 2 mA typical, which is modest for a 500mA LDO — not the lowest-Iq part for battery-idle designs, but fine for always-on industrial rails where the load current dominates the budget. ## Obsolete — sourcing the LM2937ESX-2.5/NOPB today","metaTitle":"LM2937ESX-2.5/NOPB LDO Regulator, 2.5V Fixed, 500mA","metaDescription":"Texas Instruments LM2937ESX-2.5/NOPB positive fixed LDO, 2.5V output, 500mA, -40°C to 125°C, DDPAK/TO-263-3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","PSRR":"-","Series":"-","Package":"Tape & Reel (TR)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-263-4, D²Pak (3 Leads + Tab), TO-263AA","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Control Features":"-","Current - Output":"500mA","Base Product Number":"LM2937","Protection Features":"Over Temperature, Reverse Polarity, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C~125°C","Voltage - Input (Max)":"26V","Voltage Dropout (Max)":"1V @ 50mA","Current - Supply (Max)":"1.25 A","Voltage - Output (Max)":"-","Supplier Device Package":"DDPAK/TO-263-3","Current - Quiescent (Iq)":"2 mA","Voltage - Output (Min/Fixed)":"2.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.3300","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/fde2ea9d87633116f7579b8ea9d1fc83.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM2937ESX-2.5%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between LM2937ESX-2.5/NOPB and LM2937ESX-3.3/NOPB?","answer":"The only difference is the fixed output voltage: the -2.5 variant delivers 2.5V, while the -3.3 variant delivers 3.3V. All other ratings — 500mA output, 26V max input, same DDPAK package, same protection features, same temperature range — are identical."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM2937ESX-2.5-NOPB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM2937ESX-2.5-NOPB when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}